21) Ramesh can complete a work in 12 days, working 7 hours a day. Suresh can complete the same work in 8 days, working 9 hours a day. If Ramesh and Suresh work together working 7 hours a day, in how many days can they complete the work? a. 7 * 3/23 b. 5 * 7/13 c. 6 * 5/13 d. 6 * 6/11 e. None of these
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Answer:
3days
Step-by-step explanation:
504/7=72hours
72/24=3days
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